AKChowningReverb

This is was built using the JC reverb implentation found in FAUST. According
to the source code, the specifications for this implementation were found on
an old SAIL DART backup tape.
This class is derived from the CLM JCRev function, which is based on the use
of networks of simple allpass and comb delay filters. This class implements
three series allpass units, followed by four parallel comb filters, and two
decorrelation delay lines in parallel at the output.